EM637327TQ-5 datasheet(8/78 Pages) ETRON

Part #	EM637327TQ-5

Description	1Mega x 32 SGRAM

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Manufacturer	ETRON [Etron Technology, Inc.]

Direct Link	http://www.etron.com

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8 / 78 page

EtronTech

1Mega x 32 SGRAM

EM637327

Preliminary

8

August 1999

READ A

NOP

WRITE B

NOP

CLK

D QM

C OM M A ND

DQ's

T0

T1

T2

T3

T4

T5

T6

T7

T8

NOP

DOUT A0

DI NB0

DINB1

DINB2

Must be Hi-Z before

the Write Command

: "H" or "L"

Read to Write Interval (Burst Length

≥ 4, CAS# Latency = 3)

CLK

D QM

C OM M A ND

CAS# latency=1

tCK1, DQ's

T0

T1

T2

T3

T4

T5

T6

T7

T8

NOP

READ A

WRITE A

NOP

BANKA

ACTIVATE

DIN A0

DIN A1

DIN A2

DIN A3

DIN A0

DIN A1

DIN A2

DIN A3

Must be Hi-Z before

the Write Command

1 Clk Interval

CAS# latency=2

tCK2, DQ's

: "H" or "L"

Read to Write Interval (Burst Length

≥ 4, CAS# Latency = 1, 2)

CLK

D QM

C OM M A ND

CAS# latency=1

tCK1, DQ's

T0

T1

T2

T3

T4

T5

T6

T7

T8

NOP

READ A

NOP

WRITE B

NOP

DIN B0

DIN B1

DIN B2

DIN B3

DIN B0

DIN B1

DIN B2

DIN B3

Must be Hi-Z before

the Write Command

CAS# latency=2

tCK2, DQ's

NOP

DOUT A0

: "H" or "L"

Read to Write Interval (Burst Length

≥ 4, CAS# Latency = 1, 2)

A read burst without the auto precharge function may be interrupted by a BankPrecharge/

PrechargeAll command to the same bank. The following figure shows the optimum time that

BankPrecharge/ PrechargeAll command is issued in different CAS# latency.

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EM637327TQ-5 Datasheet(PDF) 8 Page - Etron Technology, Inc.

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